H-Frame Quad Copter
by yimmy, published
This design uses Home Depot towel bar. The towel bar is 15.5mm square. This frame is designed for two 18in bars and one 30 inch bar. You only need to cut the 30in bar in half. It is used for the center bars. The 18in bars are used for the motor mounts. The top plates get secured to the bottom plates with a 3mm or 4mm bolt. The nut goes on the bottom.
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I'm going to have to revisit this...When I had made this the first time around my AUP was close to 2Kg. Flight times were terrible and a flat pancake type crash almost killed my battery. I've since switched to a TBS clone that I made on a laser cutter. This protects my battery inside the case.
Had my first really hard landing, actually a prop started coming off at about 340m AGL. So I cam down REALLY quick.
The prop & spinner finally came off about a 1m AGL. I was expecting to climb that high, just got excited by how well it was flying, just kept going. I forgot to LockTite the prop spinners.
No damage what so ever, even found the prop and spinner, which was within 10cm of the H-Quad. Battery was a 3s 5000mah... weight about 450g / ~16oz
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